单片机与上位机的通讯程序，希望能帮助到有需要的朋友。

利用8051单片机驱动H6152射频读写模块，实现对非接触式射频卡的读写操作。-8051 drivers to use radio frequency reader module H6152, to realize non-contact RF card read and write operations.

实现51单片机的日历功能 用T2定时器作为基本时钟中断-The realization of the calendar features 51 single-chip using T2 as the basic clock timer interrupt

SD卡方面的东东,希望对大家有所帮助,呵呵, 我为人人,人人为我

用MSP430单片机编写的程序，可显示4行汉字-with MSP430 prepared by the procedure will show that four Chinese firms

将51单片机程序装化为二进制代码 利于在rom中重写-to 51 SCM procedures loaded into binary code which will help the rewrite rom

：介绍一种无人值守的停车场管理系统的设计。该系统前端主要由GsM 短信模块TC35i和AVR 单片机At― megal6组成，安装在停车场的每个进出口，通过接收车主的手机短信控制进出口道闸的开启并由短信扣取停车费用，各进出 口电路都与监控中心计算机连接。-: A unmanned car park management system design. The system front-end GsM messages by AVR module TC35i and At-megal6 composed of single-chip installed in the parking lot of each import or export through SMS to receive the owner to control the import and export of道闸open parking fees deducted by SMS , the import and export of circuits are connected with the monitoring center computer.

AVR单片机开发的源代码，对于单片机开发人员有很大的帮助作用。-AVR development of the source code for the MCU developers have been very helpful.

AVR单片机下的mmc卡控制程序，包括系统SPI模式初始化，使卡进入SPI模式及检测等-AVR cards under the VAT control procedures, including the systematic SPI mode initialization, access cards and SPI mode detection

Atmel SPI Master C51程序-Atmel SPI Master C51 procedures

采用ADC0809采集数据，并通过串口上传到上位机，采用C语言编写，简单易懂-using data acquisition, and through serial upload it to the PC using C language. easily understood